('CID100001167', 2),URIDINE-DIPHOSPHATE-N-ACETYLGLUCOSAMINE
('CID100001167', 2),URIDINE-DIPHOSPHATE-N-ACETYLGLUCOSAMINE
('CID100440412', 1),URIDINE-DIPHOSPHATE-N-ACETYLGLUCOSAMINE
ldiff: defaultdict(<type 'list'>, {'CID100440412': [0], 'CID100001167': [0, 0]})
f1: [0, 0]
f2: [0]
c1: Counter({0: 2})
c2: Counter({0: 1})
The chosen was ... CID100001167